Sharkbench

Benchmarking programming languages and web frameworks

Flask: Development Server vs Gunicorn

Flask is a lightweight and flexible Python web framework for creating web applications. It is designed as a simple core that is easily extendable through numerous extensions for form validation, upload handling, and authentication technologies. Flask follows the "micro-framework" philosophy that gives developers more control over component choices.

This benchmark tests how fast a framework can perform concurrent HTTP requests, I/O operations, and JSON de/serialization.

OS: Linux/DockerCPU: Ryzen 7 7800X3DLast Updated: 2025-05-04

Comparison

Gunicorn processes 1.21x requests per second compared to Development Server, a 21.33% improvement.

Mode	Requests per second Indicates how many requests per second the framework can handle. (higher is better)	Latency Indicates how long it takes to process a request. (lower is better)	Stability Indicates how stable the framework is under load: median / P99 latency (higher is better)	Memory Indicates how much memory (RAM) the framework uses. (lower is better)
Gunicorn	1092 (+21.33 %)	7.7 ms (-76.85 %)	9.22 % (-62.40 %)	90.3 MB (+228.51 %)
Development Server	900	33.2 ms	71.62 %	27.5 MB

All results

MedianP99

Framework	Requests per second Indicates how many requests per second the framework can handle. (higher is better)	Latency Indicates how long it takes to process a request. (lower is better)	Stability Indicates how stable the framework is under load: median / P99 latency (higher is better)	Memory Indicates how much memory (RAM) the framework uses. (lower is better)
Python v3.8 / Flask v2.3 (Gunicorn)	1092	7.7 ms	9.22 %	90.3 MB
Python v3.8 / Flask v2.3 (Development Server)	900	33.2 ms	71.62 %	27.5 MB

Popular web frameworks

How does Flask compare to other popular frameworks?

MedianP99

Framework	Requests per second Indicates how many requests per second the framework can handle. (higher is better)	Latency Indicates how long it takes to process a request. (lower is better)	Stability Indicates how stable the framework is under load: median / P99 latency (higher is better)	Memory Indicates how much memory (RAM) the framework uses. (lower is better)
Rust / Axum	21030	1.6 ms	71.96 %	8.5 MB
C# (.NET) / ASP.NET Core	14707	1.2 ms	2.64 %	136.5 MB
JavaScript (Node.js) / Express	5766	5.5 ms	64.50 %	82.5 MB
Go / Gin	3546	1.0 ms	1.14 %	16.7 MB
Python / FastAPI (Uvicorn)	1185	21.0 ms	21.21 %	41.2 MB
Java (Temurin) / Spring Boot (MVC)	1105	1.7 ms	1.67 %	596.8 MB
Python / Flask (Gunicorn)	1092	7.7 ms	9.22 %	90.3 MB
Python / Django (Gunicorn)	950	8.8 ms	10.33 %	130.1 MB
Python / Flask (Development Server)	900	33.2 ms	71.62 %	27.5 MB
PHP / Laravel	299	101.7 ms	56.47 %	84.2 MB